CN105171187B - A kind of adjustable electric welding machine of floating voltage - Google Patents

A kind of adjustable electric welding machine of floating voltage Download PDF

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Publication number
CN105171187B
CN105171187B CN201510568368.2A CN201510568368A CN105171187B CN 105171187 B CN105171187 B CN 105171187B CN 201510568368 A CN201510568368 A CN 201510568368A CN 105171187 B CN105171187 B CN 105171187B
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module
switch
diode
input
voltage
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CN105171187A (en
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刘文斌
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刘文斌
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/095Monitoring or automatic control of welding parameters
    • B23K9/0953Monitoring or automatic control of welding parameters using computing means

Abstract

The present invention relates to electric welding machine field, it discloses a kind of adjustable electric welding machine of floating voltage, the electric welding machine is provided with a voltage regulating rectifier module, utilize the voltage regulating rectifier module, the floating voltage of electric welding machine can be adjusted, so that welding personnel can be adjusted when carrying out welding job using the electric welding machine according to the difference of welding material selects different floating voltages, and then welding efficiency and quality can be effectively improved, while also effectively expanding the application scenario of electric welding machine.

Description

A kind of adjustable electric welding machine of floating voltage
Technical field
The present invention relates to electric welding machine field, and in particular to a kind of adjustable electric welding machine of floating voltage.
Background technology
Electric welding machine be the high-temperature electric arc that is produced using positive and negative polarities in instantaneous short circuit come the solder on consumable electrode and Materials to be welded, makes to be touched the purpose that thing is combined.Electric welding machine is general can be divided into two kinds by out-put supply species, and one kind is exchange Power supply, one kind are direct currents.Electric welding machine is powered but is not subjected to(Without electric arc)When, the voltage on electric welding machine lead-out terminal Referred to as floating voltage, it is typically between 60-80V.The floating voltage of the existing A.C. welder of China be no more than 85 volts, and Dc welding machine is no more than 90 volts.The floating voltage of electric welding machine is higher, more fast-forward into stabling current state, and arc stiffness is better, It is adapted to welding slab material;Floating voltage is lower, and the smoothness of electric arc formation is better, and the heat input of striking is easier to hold, It is adapted to welding ultra thin plate.Traditional situation is that floating voltage, than what is determined, is one by the number of turns of welding internal transformer Fixed numerical value, therefore the floating voltage value of existing electric welding machine is fixed;Therefore, existing electric welding machine is welding different Welding efficiency is relatively low during material, and welding quality is relatively low, and welding personnel selects unloaded sometimes for according to different welding materials The different electric welding machine of voltage.
The content of the invention
In order to overcome deficiency of the prior art, the present invention provides a kind of adjustable electric welding machine of floating voltage, to cause It can be adjusted in welding process according to the difference of welding material and select different floating voltages, so as to effectively improve welding effect Rate and quality.
The present invention is achieved by the following technical solutions:A kind of adjustable electric welding machine of floating voltage, the electric welding machine bag Control system module, welding gun are included, the man-machine interface operation being connected with control system module and display module, the surge being sequentially connected Suppression module, rectification module, PFC module, inversion module, transformer, are connected between the control system module and PFC module PFC drive modules, are connected with inversion drive module between the control system module and inversion module, also include voltage regulating rectifier Module, current sampling module and voltage sampling module, the voltage regulating rectifier module are connected between transformer and welding gun, institute Stating the input of current sampling module at least has two input interfaces, wherein the input of an input interface and inversion module connects Connect, to obtain the input current information of inversion module, the input connection of another input interface and welding gun, to obtain the defeated of welding gun Enter current information;The input of the voltage sampling module is connected with the output end of voltage regulating rectifier module, to obtain voltage regulating rectifier The output voltage of module;The output end of the current sampling module, the output end of voltage sampling module with control system module Connection.
Further, the rectification module be three phase rectifier module, the electric welding machine also include commutation become flow module with And commutation unsteady flow drive module, the commutation becomes flow module and is connected between voltage regulating rectifier module and welding gun, the commutation unsteady flow Drive module is connected to commutation and become between flow module and control system module.
Preferably, the voltage regulating rectifier module include an electric capacity, first switch rectification circuit, second switch rectification circuit, 3rd switch rectifying circuit and the 4th switch rectifying circuit;
The first switch rectification circuit, the 4th switch rectifying circuit include switch and two poles being connected in series with each other Pipe, and the first switch rectification circuit is using one end where the anode of diode as input, with the negative electrode institute of diode One end be used as output end;The second switch rectification circuit, the 3rd switch rectifying circuit include what is be connected in series with each other Switch and diode, and the second switch rectification circuit is using one end where the negative electrode of diode as input, with two poles One end where the anode of pipe is used as output end;
The input of the first switch rectification circuit is connected with the input of second switch rectification circuit and as pressure regulation One of input of rectification module, the output end of the 3rd switch rectifying circuit and the input of the 4th switch rectifying circuit End connects and is used as one of input of voltage regulating rectifier module;The output end of the first switch rectification circuit is opened with the 3rd Close the input connection of rectification circuit, the output end of the second switch rectification circuit and the input of the 4th switch rectifying circuit Connection;
The two ends of the electric capacity are connected in series in the output end and second switch rectification circuit of first switch rectification circuit Between output end, and the electric capacity two ends as voltage regulating rectifier module output end.
It is preferred that the voltage regulating rectifier module controls its output end by the time for controlling the closure of each switch and disconnecting Output voltage.
Further, the control system module is provided with for being connect with the synchronous communication that external equipment is communicatively coupled Mouthful.
The electric welding machine that the present invention is provided, by increasing by a voltage regulating rectifier module so that welded using the electric welding machine It can adjust according to the difference of welding material when work and select different floating voltages:Such as when welding slab material, regulation From higher floating voltage, so that electric welding machine quickly enters stabling current state, arc stiffness is more preferable;And in welding thin plate During material, then relatively low floating voltage is selected in regulation, so that the smoothness of electric arc formation is more preferably, the heat input of striking is easier Hold.The electric welding machine provided using the present invention, while welding efficiency is effectively improved with quality, can also be prevented effectively from welding people Member is welding the drawbacks of different welding materials need to select the electric welding machine of different floating voltages.
Brief description of the drawings
Accompanying drawing 1 is the circuit theory module frame chart of electric welding machine described in the embodiment of the present invention;
Accompanying drawing 2 is the circuit theory module frame chart of electric welding machine described in another embodiment of the present invention;
Accompanying drawing 3 is the principle modules block diagram of voltage regulating rectifier module described in the embodiment of the present invention;
Accompanying drawing 4-1 is the circuit theory schematic diagram of first switch rectification circuit and the 4th switch rectifying circuit;
Accompanying drawing 4-2 is another circuit theory schematic diagram of first switch rectification circuit and the 4th switch rectifying circuit;
Accompanying drawing 4-3 is the circuit theory schematic diagram of second switch rectification circuit and the 3rd switch rectifying circuit;
Accompanying drawing 4-4 is another circuit theory schematic diagram of second switch rectification circuit and the 3rd switch rectifying circuit;
Accompanying drawing 5 is the circuit theory schematic diagram of voltage regulating rectifier module described in the embodiment of the present invention;
Accompanying drawing 6 is the input voltage of voltage regulating rectifier module shown in figure 5, the contrast schematic diagram of output voltage.
Embodiment
For the ease of the understanding of those skilled in the art, the invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of adjustable electric welding machine of floating voltage, the electric welding machine includes control system module, welding gun, Be connected with control system module man-machine interface operation and display module, the surge suppression modules being sequentially connected, rectification module, PFC module, inversion module, transformer, PFC drive modules, the control are connected between the control system module and PFC module Be connected with inversion drive module between system module and inversion module processed, also include voltage regulating rectifier module, current sampling module, And voltage sampling module, the voltage regulating rectifier module is connected between transformer and welding gun, the current sampling module it is defeated Entering end at least has two input interfaces, wherein the input connection of an input interface and inversion module, to obtain inversion module Input current information, the input connection of another input interface and welding gun, to obtain the input current information of welding gun;The voltage The input of sampling module is connected with the output end of voltage regulating rectifier module, to obtain the output voltage of voltage regulating rectifier module;It is described The output end of current sampling module, the output end of voltage sampling module are connected with control system module.It is described in the present embodiment Control system module is made up of microprocessor, memory module, input/output module, Analog-digital Converter module, communication module etc.; The control system module is the achievable functional module of prior art, and it is no longer described in detail at this.
The electric welding machine that the present embodiment is provided, the floating voltage of electric welding machine is adjusted by voltage regulating rectifier module so that in profit It can be adjusted when welding job is carried out with the electric welding machine according to the difference of welding material and select different floating voltages, Jin Erke Welding efficiency and quality are effectively improved, while also effectively expanding the application scenario of electric welding machine.
In addition, being communicated and information exchange with external equipment for convenience, the control system module is provided with use In the synchronous communication interface being communicatively coupled with external equipment, by the synchronous communication interface, external equipment pair may be implemented in Electric welding machine is controlled.
Accompanying drawing 2 be applied to three-phase alternating current electric welding machine circuit theory module frame chart, its with a upper embodiment The difference is that only for electric welding machine adds commutation change flow module and commutation unsteady flow drive module, while the rectification module For three phase rectifier module, as shown in Figure 2, the commutation becomes flow module and is connected between voltage regulating rectifier module and welding gun, described Commutation unsteady flow drive module is connected to commutation and become between flow module and control system module.
In the embodiment of the present invention, the surge suppression modules, rectification module(Including three phase rectifier module), it is PFC module, inverse Become module, transformer, commutation change flow module, commutation unsteady flow drive module, PFC drive modules, inversion drive module, current sampling Module, voltage sampling module, each functional module such as man-machine interface operation and display module is prior art or prior art can The functional module of realization, its operation principle or its concrete composition are no longer described in detail at this.But it should be noted that, above-mentioned each function mould In block, the integrated circuit module of multiple functional modules can be realized its corresponding function by it according to actual needs, or The function of some functional modules can be combined to realize by hardware with software;Such as can be integrated by PFC drive modules and PFC module In same circuit module, such as itself there is drive functional module in PFC module, or can in control system module band There are PFC drive functional modules;And for example current sampling module is integrated in control system module with voltage sampling module, or electric current Sampling module can be realized with the function of voltage sampling module by being combined in control system module by hardware with software; Also some functional module can be divided into multiple functional modules to realize, be such as divided into man-machine interface operation and display module man-machine Interface operation module, man-machine interface display module are realized.
Described voltage regulating rectifier module is described in further detail below:Such as accompanying drawing 3, Fig. 4(Figure in the present embodiment 4 include Fig. 4-1, Fig. 4-2, Fig. 4-3, Fig. 4-4)Shown, the voltage regulating rectifier module includes an electric capacity C1, first switch rectified current Road, second switch rectification circuit, the 3rd switch rectifying circuit and the 4th switch rectifying circuit;
The first switch rectification circuit, the 4th switch rectifying circuit include switch and two poles being connected in series with each other Pipe, and the first switch rectification circuit is using one end where the anode of diode as input, with the negative electrode institute of diode One end be used as output end;The second switch rectification circuit, the 3rd switch rectifying circuit include what is be connected in series with each other Switch and diode, and the second switch rectification circuit is using one end where the negative electrode of diode as input, with two poles One end where the anode of pipe is used as output end;
The input of the first switch rectification circuit is connected with the input of second switch rectification circuit and as pressure regulation One of input of rectification module, the output end of the 3rd switch rectifying circuit and the input of the 4th switch rectifying circuit End connects and is used as one of input of voltage regulating rectifier module;The output end of the first switch rectification circuit is opened with the 3rd Close the input connection of rectification circuit, the output end of the second switch rectification circuit and the input of the 4th switch rectifying circuit Connection;
The two ends of the electric capacity are connected in series in the output end and second switch rectification circuit of first switch rectification circuit Between output end, and the electric capacity two ends as voltage regulating rectifier module output end.
In figure 3, in Fig. 3 A ends, B ends is the output end of voltage regulating rectifier module, and it is used to be connected with welding gun.Fig. 4- 1st, Fig. 4-2 is two kinds of specific electrical block diagrams of first switch rectification circuit and the 4th switch rectifying circuit, Fig. 4-3, Fig. 4-4 is two kinds of specific electrical block diagrams of second switch rectification circuit and the 3rd switch rectifying circuit.
Preferably, the voltage regulating rectifier module in the present embodiment is using scheme as shown in Figure 5, and it includes first switch S1, second switch S2, the 3rd switch S3, the 4th switch S4, the first diode D1, the second diode D2, the 3rd diode D3, the Four diode D4, and electric capacity C1.Wherein:First switch S1 and the first diode D1 composition first switch rectification circuits, first Switch S1 and the first diode D1 composition first switch rectification circuits, second switch S2 and the second diode D2 composition second switches Rectification circuit, the 3rd switch S3 and the first diode D3 constitutes the 3rd switch rectifying circuit, the 4th switch S4 and the first diode D4 constitutes the 4th switch rectifying circuit.
As shown in Figure 5, first switch S1 one end is connected with second switch S2 one end and as voltage regulating rectifier module One of input be connected with transformer, the 3rd diode D3 anode is connected and conduct with the 4th diode D4 negative electrode Another input of voltage regulating rectifier module is connected with transformer;The anode of the first switch S1 other end and the first diode D1 Connection, the first diode D1 negative electrode is connected by the 3rd switch S3 with the 3rd diode D3 negative electrode;Second switch S2's is another One end is connected with the second diode D2 negative electrode, and the second diode D2 anode passes through the 4th switch S4's and the 4th diode D4 Anode is connected;The two ends of the electric capacity C1 be connected in series in the first diode D1 negative electrode and the second diode D2 anode it Between, and electric capacity C1 two ends(A ends, B ends)It is used as the output end of voltage regulating rectifier module.Voltage regulating rectifier module in the present embodiment, It controls the output voltage of its output end by the time for controlling the closure of each switch and disconnecting, so as to realize to electric welding machine Floating voltage it is adjustable.
In the voltage regulating rectifier module shown in accompanying drawing 5, first switch rectification circuit is used with the 4th switch rectifying circuit Circuit structure be circuit structure shown in Fig. 4-1, second switch rectification circuit is used with the 3rd switch rectifying circuit Circuit structure be circuit structure shown in Fig. 4-3;In actual applications, first switch rectification circuit and the 4th switch are whole Current circuit can use the circuit structure of any one in Fig. 4-1, Fig. 4-2;Equally, second switch rectification circuit and the 3rd switch are whole Current circuit can use the circuit structure of any one in Fig. 4-3, Fig. 4-4.
Below using the voltage regulating rectifier module shown in accompanying drawing 5 as specific embodiment, the course of work of repoussage flow module is exchanged Or principle is further described.It is defeated that accompanying drawing 6 receives transformer for the input of voltage regulating rectifier module shown in figure 5 Go out after the alternating voltage at end, by controlling each switch(First, second, third, fourth switch)Closure with disconnect time come Pressure regulation is carried out, and passes through each diode(First, second, third, fourth diode)And electric capacity C1 carries out what is exported after rectification The schematic diagram of DC voltage.
Wherein:In the TO-T1 stages, first switch S1, the 4th switch S4 are closed, and second switch S2, the 3rd switch S3 are equal Disconnect;In the T1-T2 stages, first switch S1, the 4th switch S4 disconnect, and second switch S2, the 3rd switch S3 disconnect; T2-T3 stages, first switch S1, the 4th switch S4 are disconnected, and second switch S2, the 3rd switch S3 are closed;In T3-T4 ranks Section, first switch S1, the 4th switch S4 are closed, and second switch S2, the 3rd switch S3 disconnect;Opened in the 41-T5 stages, first Close S1, the 4th switch S4 to disconnect, second switch S2, the 3rd switch S3 disconnect.
Voltage regulating rectifier module in the present embodiment, first switch S1 with the 4th switch S4 on off state be it is synchronous, Even first switch S1 is closed, and the 4th switch S4 is also closed, if first switch S1 disconnects, and the 4th switch S4 also disconnects;Equally, Two switch S2 are also synchronous with the 3rd switch S3 on off state.Due in the embodiment of the present invention, first switch S1 and the 4th The on off state for switching S4 is identical, and second switch S2 is also identical with the 3rd on off state for switching S3, therefore by first switch S1 It is referred to as first group of switch with the 4th switch S4, the switches of second switch S2 and the 3rd S3 is referred to as second group of switch;Two groups are opened Close alternately closure with disconnecting, and realize by controlling the closure of two groups of switches with the time point disconnected its output voltage can Adjust, so as to realize to the adjustable of the floating voltage of electric welding machine.Therefore, welded in the electric welding machine provided using the present embodiment When, you can the floating voltage of electric welding machine is adjusted according to the difference of welding material, to effectively improve welding efficiency and welding quality, Such as when welding slab material, higher floating voltage is selected in regulation, so that electric welding machine quickly enters stabling current state, electricity Arc deflection is more preferable;And when welding light sheet material, then relatively low floating voltage is selected in regulation, so that the smoothness of electric arc formation is more Good, the heat input of striking is easier to hold.
It should be noted that the voltage regulating rectifier module that the present embodiment is provided, it is not limited only to by above-mentioned hardware circuit To realize its function, it can also pass through controller(Or microprocessor)The mode combined with software program realizes its function.
The electric welding machine that the present embodiment is provided is in practical operation, and the regulation to floating voltage can be by grasping in man-machine interface Make and display module in man-machine interface operation module in be configured, or can also by with the control system module The external equipment of synchronous communication interface connection is configured, by the synchronous communication interface, may be implemented in external equipment to electric welding Machine is controlled.The floating voltage adjustable extent of electric welding machine in the present embodiment be 10V-300V between, for welding slab During material, floating voltage is generally adjusted to 80V-300V and is preferred, and when welding light sheet material, then floating voltage generally adjust to 10V-80V is preferred;But in actual applications, the design parameter of floating voltage also needs to be carried out really according to the requirement of welding procedure It is fixed, therefore the above-mentioned floating voltage scope enumerated is only the probable ranges enumerated, and is not the floating voltage to electric welding machine Limitation.
The content mentioned in above-described embodiment is the present invention preferably embodiment, is not limited to the present invention, On the premise of not departing from present inventive concept, any obvious replacement is within protection scope of the present invention.

Claims (5)

1. a kind of adjustable electric welding machine of floating voltage, the electric welding machine includes control system module, welding gun, with control system module The man-machine interface operation of connection and display module, the surge suppression modules being sequentially connected, rectification module, PFC module, inversion mould Block, transformer, are connected with PFC drive modules between the control system module and PFC module, the control system module with it is inverse Inversion drive module is connected between change module, it is characterised in that:Also include voltage regulating rectifier module, current sampling module, with And voltage sampling module, the voltage regulating rectifier module is connected between transformer and welding gun, the input of the current sampling module End at least has two input interfaces, wherein the input connection of an input interface and inversion module, to obtain the defeated of inversion module Enter current information, the input connection of another input interface and welding gun, to obtain the input current information of welding gun;The voltage takes The input of egf block is connected with the output end of voltage regulating rectifier module, to obtain the output voltage of voltage regulating rectifier module;The electricity Output end, the output end of voltage sampling module of stream sampling module are connected with control system module;
The voltage regulating rectifier module includes an electric capacity, first switch rectification circuit, second switch rectification circuit, the 3rd switching and rectifying Circuit and the 4th switch rectifying circuit;
The first switch rectification circuit, the 4th switch rectifying circuit include the switch and diode being connected in series with each other, and The first switch rectification circuit is using one end where the anode of diode as input, with one where the negative electrode of diode End is used as output end;The second switch rectification circuit, the 3rd switch rectifying circuit include the switch that is connected in series with each other with Diode, and the second switch rectification circuit is using one end where the negative electrode of diode as input, with the sun of diode One end where pole is used as output end;
The input of the first switch rectification circuit is connected with the input of second switch rectification circuit and as voltage regulating rectifier One of input of module, the output end of the 3rd switch rectifying circuit connects with the input of the 4th switch rectifying circuit Connect and as one of input of voltage regulating rectifier module;The output end of the first switch rectification circuit and the 3rd switch are whole The input connection of current circuit, the output end of the second switch rectification circuit connects with the input of the 4th switch rectifying circuit Connect;
The two ends of the electric capacity are connected in series in the output end of first switch rectification circuit and the output of second switch rectification circuit Between end, and the electric capacity two ends as voltage regulating rectifier module output end.
2. the adjustable electric welding machine of floating voltage according to claim 1, it is characterised in that:The first switch rectification circuit bag First switch and the first diode are included, second switch rectification circuit includes second switch and the second diode, the 3rd switching and rectifying Circuit includes the 3rd switch and the 3rd diode, and the 4th switch rectifying circuit includes the 4th switch and the 4th diode;
One end of first switch and one end connection of second switch and one of input as voltage regulating rectifier module and change Depressor is connected, and the anode of the 3rd diode is connected with the negative electrode of the 4th diode and as another input of voltage regulating rectifier module End is connected with transformer;The other end of first switch is connected with the anode of the first diode, and the negative electrode of the first diode passes through Three switches are connected with the negative electrode of the 3rd diode;The other end of second switch is connected with the negative electrode of the second diode, the two or two pole The anode of pipe is connected by the 4th switch with the anode of the 4th diode;The two ends of the electric capacity are connected in series in the first diode Negative electrode and the second diode anode between.
3. the adjustable electric welding machine of floating voltage according to claim 2, it is characterised in that:The voltage regulating rectifier module passes through control The closure for making each switch controls the output voltage of its output end with the time disconnected.
4. the adjustable electric welding machine of the floating voltage according to any one in claim 1-3, it is characterised in that:The rectification mould Block is three phase rectifier module, and the electric welding machine also includes commutation and becomes flow module and commutation unsteady flow drive module, the commutation Become flow module be connected between voltage regulating rectifier module and welding gun, the commutation unsteady flow drive module be connected to commutation become flow module with Between control system module.
5. the adjustable electric welding machine of floating voltage according to claim 4, it is characterised in that:The control system module is provided with For the synchronous communication interface being communicatively coupled with external equipment.
CN201510568368.2A 2015-09-08 2015-09-08 A kind of adjustable electric welding machine of floating voltage Active CN105171187B (en)

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CN106112208A (en) * 2016-06-29 2016-11-16 张超 A kind of electric welding machine regulating circuit

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